> [!IMPORTANT] > **Important:** Before running the local development server, follow the [setup instructions](https://docs.cloud.google.com/appengine/docs/standard/tools/using-local-server#set-up). The [local development server](https://docs.cloud.google.com/appengine/docs/standard/tools/using-local-server) runs on your local machine and emulates most of the Search API's capabilities. A few features are not available on the server. You should not attempt to ### Functions in expressions These functions are not available: - `pow()` ### Snippet() Expressions The development server supports snippets, but the snippet selection and formatting algorithms are not the same as those used in a deployed app. Snippet results will not be exactly the same in the two environments. ### Stemming Stemming of field values (for example "\~cat") is not implemented. The stem operator will be ignored and the value will be treated as an ordinary exact match. ### Tokenization String fields in Asian languages are not tokenized on the development server. ### Scoring The match scoring mechanism is not implemented. ### Diacriticals Diacritical marks (such as accent marks) cannot be used in atom, text, and HTML fields.